Phonograph.



JQF. OTT. PHONOGRAPH. APPLICATION FILED JAN. 20. 1908 Patented Aug. 24, 1909.

I of the United States,

JOHN F. OTT, F ORANGE, NEW J'EBS facture a sound record in which the record .ily applied to a phonograph and in which,

speed.

- UNITED STATES PATENT oFFIoE.

EY, ASSIGNORTO NEW JERSEY PATENT COMPANY, OF WEST ORANGE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PHONOGRAPH.

Application filed January 20,

To all whom itmay concern:

Be it known that I, J OHN F. Orr, a citizen and a resident of Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Phpnogra-phs, of which the following-is a description.

My invention relates to phonbgraphs of the type wherein the sound box is carried on a traveling carriage to which a progress; ive movement is imparted by means of a rotating feed screw, so that, the reproducer or recorder. stylus tra ee's a spiral path with respect to the record surface. .It has been the usual practice for many years to provide a feed screw of fine pitch which will advance the traveling carriage a distance of one one-hundredth of an inch for each revolution of the mandrel. More recently, however; it has been found possible to manugroove has two hundred turns or threads to the inch, so that it is desirable to provide a phonograph in which the feed of the carriage will be suitable for operating upon a record of this description.' In view of the fact,'l'1owever, that there are already thousands of phonographs in use in which the feed screw advances the carriage one one hundredth of an inch per mandrel revolution, and a vast number of records are also in use having apitch of one one-hundredth of an inch, it is desirable to provide means which may readily be applied to .such phonographs whereby the feed screwmay be driven at one-half the speed at which it has been heretofore driven, such means also permitting the driving of the feed' screw at its usual speed, so that the phonograph can beused interchangeably with sound records having either one hundred or two'hundred threads per inch, and my invention has for its object the. )rovision of interchangeable means of this 0' aracter which may be'r'ead-,

when so applied, the partsmay be readily shifted with respect to each other, so' as to drive the feed screw the. desired rate of Reference is hereby made to the accom-I pauying drawings of which Figured is an end elevation '-'of a welllcnown form of phonograph to which'my invention is applicd;,l ig. 2 a'plan view, partly in section on line 22 of Ifig. 1, and

Specification of Letters Patent. I Patented Aug. 24 1909.-

1908. Serial no. 411,832.

Fig. 3 is a detail section on line 3-3 of Fig. 2.

Corresponding parts are designated by the same reference numerals 1n the several views.

-The phonograph shown comprises a base 60 or frame 1 in which is journaled the main shaft 2 which carries the mandrel 3 and. drive pulley 4 which receives the driving belt from the phonograph motor. The feed screw shaft 5 is inclosed within a tubular 65.

13 are fixed to the portion 8 of the shaft 5 7 by means of set screws 14 and 15. and between said collars. are a pair of loosely mounted spur gears 16 and 17. A slot 18 is formed in the portion 8 of the shaft 5 upon The end" of the said shaft 5 7 which the gears 16 and 17 are mounted, and 8 a projection 19 is fixed to the pin and extends through the said slot for the purpose of looking or keying either of the said gears to the shaft, said gears being formed with recesses 20 and 2.1 respectively, adapted to receive said projection. There is a spur gear fixed to the mandrel shaft 2 and'the same engages a spur gear 23 which carries another spur gear 24, said gears being rotatably mounted upon a boss 25 which may be integral with the frame 1 as shown. The gear 23 meshes with the gear 17 and'tho gear 24 meshes with the gear 16. A cover plate 26 may be used to protect the gears and the same is held in position by a screw 27 threaded within the boss 25. v

' \Vhenthe parts are in the positions shown in Figs. 2 and -3,-the gear 17 is keyed'to the shaft 5 'by means-of the projection-19 carried by. the longitudinally ,movable pin 10, and 1 the said shaft will therefore be driven by the shaft 2-through the gears 22, 23 and 17, and these gears are so proportioned that the speed ofthe shaft 5 will be suitable for causing the sound boxcarriage'28 to be fed. 1

at the proper speed for operating upon a.

sound record havingone hundred threads to the iuch.' When the pm 1Q moved out ward from the position shown so as to bring the projection 1i) out engagement-with the recess 21 of the gear 17,,it may readily be caused to enter the recess 20 of the gear 16 which gear will then be keyed to the shaft 5 and the latter will be driven from the shaft 2 through the gears 22, 23, 24c and 16. These gears are so proportioned that the speed imparted to the shaft 5 will be suitable for feeding the carriage 28 operatively with respect to a sound record having two hundred threads to the inch. All that is necessary in order to convert the phonograph from one which is adapted to play a record of one hundred threads to the inch to one for playing a record of two hundred threads to the inch, is to move the pin 10 outwardly. and vice Ye, sa to convert the machine from one whiclrplays records having two hundred threads to'the inch to one which will play records having one hundred threads to the inch, the only adjustment necessary is an inward movement of the pin 10.

7 Having described my invention, what I claim is:

1. in a phonograph, the combination with the mandrel and feed screw shafts, of a plurality of gear trains uniting the two with different gear ratios, said trains including gears loosely mounted with respect to one of said shafts, a bearing for the end of said shaft. said gears being mounted on said shaft outside of said bearing. and a pin movable longitudinally of said shaft having a projection passing through a slot in said shaft and adapted to engage recesses formed in said gears, substantially-as described.

2. In a phonograph, the combination with the mandrel and feed screw shafts, of a pin rality of gear trainsuniting the two with different gear ratios, said trains including gears loosely mounted with respect to one of said shafts, a bearing for said shaft near the end thereof, said shaft having a reduced portion 'coacting therewith; said gears being mounted onsaid shaft outside of said bearing, and a pin movable longitudinally of said shaft having a projectionpassing through a slot in said shaftand adapted to engage recesses formed in said gears, substantially as' described.

3, In a phonograph, the combination with the mandrel and feed screw shafts, of a plu- ,rality of gear trains uniting the two with different gear ratios, said trains including gears loosely mounted with respect to one of said shafts, a bearing; for said shaft near the end thereof, said s aft having a reduced portion coacting therewith, said gears being mounted on said shaft outside of'said bearing, collars on said sh'afton either side of said gears, said shaft having a longitudinal recess in the end thereof, and a slot extending from said recess to the exterior of said shaft, and a pin movable longitudinally in said recess having a projection passing through said slot and adapted to engage recesses formed in said gears, substantially as described.

4. In a phonograph, the combination with the mandrel and feed screw shafts, of a plurality of gear trains uniting the two with different gear ratios, said trains comprising a gear fast ,on one of saidshafts, gears mounted concentrically and [secured to- 5. In a phonograph, the combination with the mandrel'andlfeed screw shafts, of a pluality of gear trains uniting the two with different gear' ratios, said trains including .gears loosely mounted with respect to one ofsaid shafts and adjacentthe .end thereof, a bearing for said shaft, and a pin movable longitudinallyof said shafthaviug a projection passing through a slot in said shaft andadapted; to enga e recesses formed in said gears,. sub stantial y as described,

6. In a phonograph, the combln'ation with the mandrel and'feed screw shafts, of a plu-' .rality of gear trains uniting the two with different gear ratios, said trains comprising a gear fast-on one of said shafts, gears mounted concentrically and secured" together, and "gearsloosely mounted on 'th other of said shafts, a bearing for the end of said last named shaft, ,and a pin movable longitudinally of said -shaft having a and-adapted ,to engage recesses formed in said gears, substantially as described. I

This specification signed and witnessed this 13 day of Jan. 1908.

. JoHN; mica-T,

Witnesses: i H. H. DYKE, Fimnig LEWIS.

-jection passing througha slot in said siaft- 

